Limb immobilizer



FIG. 1 is a top perspective view of a limb immobilizer, showing my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and

FIG. 5 is a side view thereof. 

The ornamental design for a limb immobilizer, substantially as shown and described. 